71855 has 8 divisors (see below), whose sum is σ = 98592. Its totient is φ = 49248.

The previous prime is 71849. The next prime is 71861. The reversal of 71855 is 55817.

It is an interprime number because it is at equal distance from previous prime (71849) and next prime (71861).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71855 - 2¹² = 67759 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12 and base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992 + ... + 1061.

It is an arithmetic number, because the mean of its divisors is an integer number (12324).

2⁷¹⁸⁵⁵ is an apocalyptic number.

71855 is a deficient number, since it is larger than the sum of its proper divisors (26737).

71855 is a wasteful number, since it uses less digits than its factorization.

71855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065.

The product of its digits is 1400, while the sum is 26.

The square root of 71855 is about 268.0578295816. The cubic root of 71855 is about 41.5737306414.

The spelling of 71855 in words is "seventy-one thousand, eight hundred fifty-five".